The correct syntax for replacing multiple lines in Powershell

Question

We have a directory of 3000 + HTML files that are transferred to the sharepoint site, and we need to clear some data.

Specific situations:

• About 1/3 of the files contain an XML header <?xml version="1.0" encoding="utf-8"?>, which is not like in sharepoint. We plan to simply remove this title bar.
• Each file has javascript options for "HOME" that point to two alternative links to the home page foo1.htmor foo.htm. We want to change both to absolute linkhttp:\\sharepoint.site\home.aspx
• Each file also has a javascript link parameter "Show", which we just want to hide by changing it to ''.

Here is my function:

function scrubXMLHeader {
    $srcfiles     = Get-ChildItem $backupGuidePath -filter "*htm.*"                              
    $srcfilecount = (Get-ChildItem $backupGuidePath).Count                                       
    $selfilecount = $srcfiles.Count                                                              
    # Input and Ouput Path variables
    $sourcePath        = $backupGuidePath 
    $destinationPath   = $workScrubPath
    "Input From: $($sourcePath)" | Log $messagLog -echo          
    " Output To: $($destinationPath)" | Log $messageLog -echo
    #
    $temp01 = Get-ChildItem $sourcePath -filter "*.htm"
    foreach($file in $temp01)
    {
        $outfile = $destinationPath + $file
        $content = Get-Content $file.Fullname | ? {$_ -notmatch "<\?xml[^>]+>" } 
        Set-Content -path $outfile -Force -Value $content
    }
}

I want to add the following two changes to each document:

-replace '("foo.htm", "", ">", "Home", "foo1.htm")', '("http:\\sharepoint.site\home.aspx", "", ">", "Home", "http:\\sharepoint.site\home.aspx")
-replace 'addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");', ''

, , , , open-edit-save/close. , , , , , .

, " HTML, , , , HTML", PowerShell, -replace $content... ? ?

? - ?

$content = Get-Content $file.Fullname | ? {$_ -notmatch "<\?xml[^>]+>", 
    -replace '("foo.htm", "", ">", "Home", "foo1.htm")', '("http:\\sharepoint.site\home.aspx", "", ">", "Home", "http:\\sharepoint.site\home.aspx"),
    -replace 'addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");', '' } 

Answer 1

, , , :

$Regex0 = '<?xml version="1.0" encoding="utf-8"?> '

$Regex1 =  '("foo.htm", "", ">", "Home", "foo1.htm")'
$Replace1 =  '("http:\\sharepoint.site\home.aspx", "", ">", "Home", "http:\\sharepoint.site\home.aspx")'

$Regex2 = 'addButton("show",BTN_TEXT,"Show","","","","",0,0,"","","");'


foreach($file in $temp01)
    {
        $outfile = $destinationPath + $file
        (Get-Content $file.Fullname) -notmatch $Regex0,'' -replace $Regex1,$Replace1 -replace $Regex2,'' |
         Set-Content -path $outfile -Force -Value $content
    }